Improvement in boring-machine



una .sans

Leners Patent No. 97,499, zaad December, 1869.`

IMPROVEMENT IN BORING-MACHINE.

Tlle Schedule refer-red to in these Lettera Patent and making part of the same.

To all persons to whom these presents may come:

Be it known `that I, FREDERICK M. GIBSON, of Chelsea, in the county of Suffolk, and Stater of Massachusetts, havev inventedau Improved Machine for Boring Wheel-Hubs and for Tenoning Spokes; and I do hereby declare the same to be fully described in thefollowing specification, and representedin the accompanying drawings, of which- Figure 1 is a front elevation, and

Figure 2, a longitudinal section of such machine.

In such drawings- A denotes a frame, provided with a puppet, B, which supports, iu suitable bearings, e c, arotary arbor or mandrel, C.

This mandrel is to be so applied to the puppet as to be capable of being revolved transversely, and of being nioved endwise therein.

The puppet, at its rear end,is hinged, as shown ata, to the frame A, in order to enable the said puppet to be raised into an inclined 'position with respect to' the top of the frame A, the puppet being held in` any. such inclined position by a set-screw, b, which screws through a crossbar, c, of the'frame A, and against a cur'ved arm, 1, projected downward from the puppet. On the re'ar end of the mandrel is a driving-wheel, e. A helical fspring, f, fastened at its iront end to the advanced post of the puppet, is at its other end secured to a collar, g.

This collar encompasses the mandrel between two shoulders, 7i i, thereof, the whole being 'so as to euable the 'mandrel to 'freely revolve within the collar,

and the spring to advance the mandrel lengthwise. "-There is another such collar on the mandrel, it being shown 'at g', as arranged between vtwo rings, k l, which circumscribe the mandrel, and-are` held thereto by set-screws, shown atm n, the same being so as to enable the collar g and the rings to be adjusted lengthwise onthe mandrel, in order to determine the extent of'. its advance, .as occasion may require,

lfrom the collar g', a line, m', goes to and over a wheel, n', arranged in the rear part of the puppet.

'A st'irrup', o, applied to the lower end of the line m, enables a person, bymeans of his foot, to eiect the retraction' of the mandrel, 4as occasion may require.

In order to prevent the spring f and the two co1- lars, g g', from revolving with'the mandrel, a rod, p, fastened to thev rear collar, isextended through the puppet andthe arm q of the front collar, such rod being free to slide through the puppet and the said arm.

A boring-tool or cutter of anyproper kind, accordl ing to the work to be performed, whether such 'lie the boring of a wheel, hub, or a felloe, or the tenoning of a spoke, is to be extended from or applied to the ad vanced end of the mandrel.

, Furthermore, there is supported in the frame A, a table or platform, P, provided with an elcvatiugscrew, Q.

This platform carries a rotary disk, R, having several circles of divisions on its upper surface, each being furnished with a series of holes, at equal distances apart, they being to receive a sl'n'ing-catch, S, 'which serves to hold the disk in any desirable position in which it may be set.

A wheel-hub when to be bored is to be placed concentrically on the upper surface of the disk, and may 4 be held down thereon by a screw, lr, screwed through a standard, s, erected on the table.

Other standards, t, provided with clamp screws, may also be .applied to the platfbrm, such being for holdinga wheel-felloe in place While being bored.

By raising tlie puppet to any desirable inclination, and fastening it in place, the boring-tool may be made toi enter the hub, so as to bore into it obliquely.

1. The combination ofthe slide-rod p, with the puppet B and with the collar g, and the spring f applied to the puppet, and the mandrel C, substantially in manner, and so as to operate therewith, as specified.

2. The combination and arrangement of the auxiliary collar g and its adjustable rings k l, and their clamp-screws fm, n., with the stirrup o and line on', the puppet B, themandrel C, and the spring f, applied to such puppet and mandrel, as specified..

3. The combination and arrangement of the sliderod p, the puppet B, the two collars, g g', the spring f, and the line m', the whole being to operate together substantially as explained.

4. In combination with the frame A, the puppet B, and mandrel C, mechanism, substantially as specified, whereby the puppet may be adjusted to and sustained iu an inclined position on its frame, as and for the purpose of inclining the mandrel, and enabliug'it to operate while at any such inclination, so as to bore obliquely into a hub or article when placed on Athe supporting-disk.

FREDERICK M. GIBSON.

Witnesses:

R. H. EDDY, SAMUEL N. PIPER. 

